Ocean Technology LLC via Amazon offers the Unitek USB 3.0 4-Port Hub for $14.99. Coupon code "GOSDBPVB" cuts the price to $7.99. Plus, Prime members qualify for free shipping. (Non-members can spend $35 to qualify; otherwise, it adds $8.15.) That's the lowest total price we could find by $7. It supports transfer rates of up to 5Gbps.

Also available is the Unitek USB 3.0 Dual Display Universal Docking Station, model no. Y-3704, for $85.99. Coupon code "JGM9TFZ8" cuts the price to $59.99. With free shipping, that's the lowest total price we could find by $35. It supports resolutions up to 2048x1152 via HDMI and 1920x1200 via VGA and provides audio input/output, Gigabit Ethernet, and two USB 3.0 ports.

Inateck Online via Amazon offers Prime members the Inateck USB 3.0 4-Port Hub, model no. HB4102, for $12.99. Coupon code "7WVV5NIE" cuts it to $10.99. Plus, Prime members bag free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise shipping costs $8.09.) That's $39 off list and the lowest total price we could find for this charger. This hub features built-in over-voltage and leakage.